2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN)最新文献_第2页

On the requirements of secondary access to 960–1215 MHz aeronautical spectrum 关于960-1215 MHz航空频谱二次接入的要求

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-05-03 DOI: 10.1109/DYSPAN.2011.5936226

K. Sung, Evanny Obregon, J. Zander

引用次数: 26

Can dynamic spectrum access induce heavy tailed delay? 动态频谱接入会导致重尾延迟吗?

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-05-03 DOI: 10.1109/DYSPAN.2011.5936206

Pu Wang, I. Akyildiz

{"title":"Can dynamic spectrum access induce heavy tailed delay?","authors":"Pu Wang, I. Akyildiz","doi":"10.1109/DYSPAN.2011.5936206","DOIUrl":"https://doi.org/10.1109/DYSPAN.2011.5936206","url":null,"abstract":"Dynamic Spectrum Access (DSA) allows secondary users (SUs) to opportunistically transmit when the channels belonging to primary users (PUs) are idle. This paper provides an asymptotic analysis of the transmission delay experienced by SUs for DSA networks. It is shown that DSA induces only light-tailed delay as long as both the busy time of PU channels and the message size of SUs are light-tailed. On the contrary, if either the busy time or the message size is heavy tailed, then the SUs' transmission delay is heavy tailed. For this latter case, it is proven that if one of either the busy time or the message size is light-tailed and the other is regularly varying with index α, then the transmission delay is regularly varying with the same index α. As a consequence, the delay has an infinite mean provided α <1 and an infinite variance provided α <2. Furthermore, if both the busy time and the message size are regularly varying with index α and α, respectively, then the tail distribution of the delay is as heavy as the one with the smaller index. Moreover, the impact of spectrum mobility and multi-radio diversity on the delay performance of SUs is studied. It is shown that the spectrum mobility can mitigate the heavy tailed delay of SUs, while the use of multiple radio interfaces may aggravate it.","PeriodicalId":119856,"journal":{"name":"2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134445497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Experimental spectrum sensor testbed for constructing indoor Radio Environmental Maps 构建室内无线电环境图的实验频谱传感器试验台

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-05-03 DOI: 10.1109/DYSPAN.2011.5936253

E. Meshkova, J. Ansari, D. Denkovski, J. Riihijarvi, J. Nasreddine, Mihajlo Pavloski, L. Gavrilovska, P. Mahonen

{"title":"Experimental spectrum sensor testbed for constructing indoor Radio Environmental Maps","authors":"E. Meshkova, J. Ansari, D. Denkovski, J. Riihijarvi, J. Nasreddine, Mihajlo Pavloski, L. Gavrilovska, P. Mahonen","doi":"10.1109/DYSPAN.2011.5936253","DOIUrl":"https://doi.org/10.1109/DYSPAN.2011.5936253","url":null,"abstract":"In this paper we describe an experimental testbed to empirically study the construction of Radio Environmental Maps (REMs) in indoor environments. The testbed allows investigating the characteristics and modeling of the radio environment for indoor scenarios. The deployed system is a network of over 80 heterogeneous wireless spectrum sensors with significantly different measurement capabilities in an office building consisting of multiple rooms. As application examples we consider two scenarios, one illustrating the indoor propagation conditions and another showing temporal aspects of primary node activities as observed by sensing devices. The observed phenomena strongly indicate that development of general radio environment map solutions for indoor use are extremely challenging, unless heterogeneity of spectrum sensors and non-linearity of propagation conditions is considered. Our measurement results advocate dynamic construction of REMs instead of static solutions. We strongly believe that the deployed testbed and obtained experimental data can further facilitate research in the area of REMs.","PeriodicalId":119856,"journal":{"name":"2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133887415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 27

Techno-economical viability of cognitive solutions for a factory scenario 工厂场景的认知解决方案的技术经济可行性

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-05-03 DOI: 10.1109/DYSPAN.2011.5936214

Lieven Tytgat, M. Barrie, V. Gonçalves, Opher Yaron, I. Moerman, P. Demeester, S. Pollin, P. Ballon, S. Delaere

{"title":"Techno-economical viability of cognitive solutions for a factory scenario","authors":"Lieven Tytgat, M. Barrie, V. Gonçalves, Opher Yaron, I. Moerman, P. Demeester, S. Pollin, P. Ballon, S. Delaere","doi":"10.1109/DYSPAN.2011.5936214","DOIUrl":"https://doi.org/10.1109/DYSPAN.2011.5936214","url":null,"abstract":"Recent advances in wireless communication theory and semiconductor technology brought wireless to virtually every aspect of our life, and this trend is expected to continue to increase in the future. Unfortunately, as the number of wireless applications grows, the same scarce spectrum is reused over and over again, resulting in increased interference, which jeopardizes the prospect of wireless meeting its high expectations. Dynamic Spectrum Access proposes to mitigate this problem by adapting the operational parameters of wireless networks to varying interference conditions. However, the involved increase in cost threatens to reduce the benefit of wireless in different environments. In this paper we examine the economic balance between the added cost and the increased usability brought about by DSA. We focus on a particular real-life scenario — the production floor of an industrial installation — where there is typically extensive utilization of the ISM band. IEEE 802.15.4 wireless sensors monitor production machinery, and IEEE 802.11 WLAN is used as the data backbone. We model the benefit achieved by adding RF sensing technology in terms of reliability and battery lifetime, and qualitatively assess the cost of interference and the potential gain of introducing sensing technology. Based on this techno-economic analysis, we conclude that if implemented correctly, spectrum sensing can bring business gains in real-life applications.","PeriodicalId":119856,"journal":{"name":"2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131742018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Evaluation of business cases for a cognitive radio network based on wireless sensor network 基于无线传感器网络的认知无线网络业务案例评估

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-05-03 DOI: 10.1109/DYSPAN.2011.5936213

O. Grøndalen, M. Lahteenoja, Pål Grønsund

{"title":"Evaluation of business cases for a cognitive radio network based on wireless sensor network","authors":"O. Grøndalen, M. Lahteenoja, Pål Grønsund","doi":"10.1109/DYSPAN.2011.5936213","DOIUrl":"https://doi.org/10.1109/DYSPAN.2011.5936213","url":null,"abstract":"This paper proposes and evaluates three business case scenarios for deployment of a sensor network aided cognitive radio system in a typical European city. The first and main business case is based on spectrum sharing, where several spectrum owners establish a joint venture and this joint venture gets the rights to use the “unused” spectrum resources of all those spectrum owners in a cognitive way. Then we study the business case of a spectrum broker, an entity that deploys, builds and operates a sensor network and sells either sensing information or information on spectrum opportunities to one or more cognitive radio operators. Finally we analyze the potential of a new entrant without existing infrastructure or frequency licenses, that uses a sensor network aided cognitive radio system to offer a nomadic mobile broadband service. It is found that the spectrum sharing business case is one of the best possible cases for the studied system because the joint venture operator has free access to frequency resources of the mother companies, detailed knowledge of the primary systems and good possibilities for sharing infrastructure with the owning operators. However, since the studied system is an innovative concept and some of the assumed parameters are therefore uncertain, it should be noted that the main value of the business case calculations is to identify critical aspects influencing the profitability so that future research and development work can focus on them. It is found that the most critical aspects are the fixed sensor density, the fixed sensor operational costs and the number of new cognitive base station sites required.","PeriodicalId":119856,"journal":{"name":"2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130895919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 20

Influence of primary network structure and dynamics on achievable performance of cognitive wireless networks 主网络结构和动态对认知无线网络可实现性能的影响

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-05-03 DOI: 10.1109/DYSPAN.2011.5936225

J. Riihijarvi, J. Nasreddine, P. Mahonen

{"title":"Influence of primary network structure and dynamics on achievable performance of cognitive wireless networks","authors":"J. Riihijarvi, J. Nasreddine, P. Mahonen","doi":"10.1109/DYSPAN.2011.5936225","DOIUrl":"https://doi.org/10.1109/DYSPAN.2011.5936225","url":null,"abstract":"We study the influence of the structure and dynamics of the primary network on occurrence and quality of transmit opportunities of the secondary network. In order to obtain accurate results, we develop a framework for performance evaluation that allows detailed modeling of the networks involved, while still enabling general conclusions to be drawn. The approach and results are applicable to diverse application scenarios, such as use of dynamic spectrum access techniques for femtocell deployments within operator networks. The techniques presented here can also be applied beyond dynamic spectrum access based networks for studying the performance of more general heterogeneous wireless systems as well. We use a combination of actual node location data sets and carefully selected node location models in order to obtain reliable results, while still allowing general conclusions to be made. The results show that even in dense primary networks significant opportunities for secondary use can arise. These originate either from the temporal dynamics of the primary, or in spatial domain from frequency reuse, provided that the primary network is active at most 30–50% of the time. For higher activity levels there are almost no useful spectrum opportunities even if the primary network is rather sparsely deployed. The results also show that the spatial structure of the deployment of the secondary network has significant influence on the capacity that can be achieved by using the arising spectrum opportunities.","PeriodicalId":119856,"journal":{"name":"2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132575122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Transmission Probability Control Game with Limited Energy 有限能量传输概率控制博弈

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-05-03 DOI: 10.1109/DYSPAN.2011.5936232

Johannes Dams, Thomas Kesselheim, B. Vocking

引用次数: 3

The impact of additional unlicensed spectrum on wireless services competition 额外的无牌频谱对无线服务竞争的影响

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-05-03 DOI: 10.1109/DYSPAN.2011.5936201

Thành Nguyen, Hang Zhou, R. Berry, M. Honig, R. Vohra

引用次数: 65

Spectrum mobility demonstration of SMSE based overlay cognitive radio via software defined radio 基于软件定义无线电的SMSE叠加认知无线电频谱移动性论证

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-05-03 DOI: 10.1109/DYSPAN.2011.5936270

Ruolin Zhou, Xue Li, V. Chakravarthy, Zhiqiang Wu

{"title":"Spectrum mobility demonstration of SMSE based overlay cognitive radio via software defined radio","authors":"Ruolin Zhou, Xue Li, V. Chakravarthy, Zhiqiang Wu","doi":"10.1109/DYSPAN.2011.5936270","DOIUrl":"https://doi.org/10.1109/DYSPAN.2011.5936270","url":null,"abstract":"In our previous work, we have demonstrated an interference avoidance overlay cognitive radio using software defined radio [1][2]. By employing spectrally modulated spectrally encoded (SMSE) framework based multi-carrier transmission waveforms, the cognitive radio is capable of turning off certain subcarriers to avoid interference to the primary users in the band. Hence, the cognitive radio operates over multiple noncontiguous spectrum holes. Here, we extend our previous work to implement and demonstrate spectrum mobility in cognitive radio. Specifically, while the cognitive radio operates over a 2MHz band, the cognitive radio will continuously sense the spectrum wider than the 2MHz band. When the total available spectrum, which is determined by stitching all spectrum holes together in the 2MHz band, is insufficient to support the required cognitive radio transmission, the cognitive radio dynamically moves to a different frequency band where enough spectrum holes exist. We demonstrate real time video transmission between two cognitive radio nodes and seamless transition when the spectrum handoff occurs.","PeriodicalId":119856,"journal":{"name":"2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127172369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Discrete-time spectrum occupancy model based on Markov Chain and duty cycle models 基于马尔可夫链和占空比的离散时间频谱占用模型

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-05-03 DOI: 10.1109/DYSPAN.2011.5936273

M. López-Benítez, F. Casadevall

引用次数: 48